The ad, which will read, "No One Should Need
Papers-Adopt an 'Undocumented' Mutt Today," likens the plight of mixed-breed shelter animals lacking in pedigrees to the undocumented immigrants who are the focus of the new Alabama law, currently on hold due to a federal court challenge.

PETA has a history of controversial marketing tactics for its positions, including several ads featuring porn stars in the nude promoting a vegan diet, and has a porn site in the works.

"Alabama, like every other state in the nation, has more 'undocumented' dogs and cats than it has good homes for," said PETA Vice President Daphna Nachminovitch. "Lineage papers or not, the heart and loyalty of each companion animal is the same. Anyone who is considering welcoming a dog or a cat into his or her home should always adopt and never buy."